At 22:57 16/06/2004, you wrote:
Dear Friends,
I am doing a research on identifying the average treatment effect
of a training program. In order to get rid of the endogeneity problem of
program participation, I want to try Heckman sample selection
technique. But I don't know how to get the average treatment effect by
running Heckman in Stata.
For example,
t is dummy for training program (1: participate, 0: not participate)
I want to know how much the training program improve the performance.
The command
heckman dep_var var_1...var_n (t=var_1...var_m) twostep
can not give me the effect of t on dep_var.
How can I do that in Stata?
I think that -treatreg- is doing what you want.
. treatreg dep_var var_1...var_n , treat(t=var_1...var_m) twostep
Also have a look at the following FAQ:
http://www.stata.com/support/faqs/stat/bias.html
jean
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